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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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5 ** |
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6 ** This file is part of the examples of the Qt Toolkit. |
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7 ** |
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8 ** $QT_BEGIN_LICENSE:LGPL$ |
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9 ** No Commercial Usage |
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10 ** This file contains pre-release code and may not be distributed. |
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11 ** You may use this file in accordance with the terms and conditions |
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12 ** contained in the either Technology Preview License Agreement or the |
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13 ** Beta Release License Agreement. |
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14 ** |
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15 ** GNU Lesser General Public License Usage |
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16 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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17 ** General Public License version 2.1 as published by the Free Software |
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18 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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19 ** packaging of this file. Please review the following information to |
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20 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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21 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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22 ** |
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23 ** In addition, as a special exception, Nokia gives you certain |
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24 ** additional rights. These rights are described in the Nokia Qt LGPL |
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25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this |
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26 ** package. |
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27 ** |
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28 ** GNU General Public License Usage |
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29 ** Alternatively, this file may be used under the terms of the GNU |
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30 ** General Public License version 3.0 as published by the Free Software |
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31 ** Foundation and appearing in the file LICENSE.GPL included in the |
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32 ** packaging of this file. Please review the following information to |
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33 ** ensure the GNU General Public License version 3.0 requirements will be |
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34 ** met: http://www.gnu.org/copyleft/gpl.html. |
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35 ** |
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36 ** If you are unsure which license is appropriate for your use, please |
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37 ** contact the sales department at http://qt.nokia.com/contact. |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #ifndef SCROLLER_P_H |
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43 #define SCROLLER_P_H |
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44 |
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45 // |
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46 // W A R N I N G |
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47 // ------------- |
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48 // |
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49 // This file is not part of the Qt API. It exists purely as an |
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50 // implementation detail. This header file may change from version to |
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51 // version without notice, or even be removed. |
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52 // |
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53 // We mean it. |
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54 // |
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55 |
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56 #include <QPoint> |
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57 #include <QTimer> |
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58 #include <QTime> |
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59 |
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60 #include "scroller.h" |
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61 |
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62 class AbstractScrollArea; |
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63 |
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64 class ScrollerPrivate |
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65 { |
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66 Q_DECLARE_PUBLIC(Scroller) |
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67 |
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68 public: |
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69 enum State { |
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70 Stopped, |
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71 Started, |
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72 ManualScrolling, |
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73 AutoScrolling |
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74 }; |
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75 |
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76 ScrollerPrivate(Scroller *scroller); |
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77 ~ScrollerPrivate(); |
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78 void stopScrolling(); |
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79 bool eventFilter(QObject *obj, QEvent *ev); |
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80 |
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81 AbstractScrollArea *m_scrollArea; |
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82 qreal m_scrollFactor; |
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83 QPoint m_cursorPos; |
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84 QPointF m_speed; |
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85 State m_state; |
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86 QTime m_lastCursorTime; |
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87 QTime m_lastFrameTime; |
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88 QTimer m_scrollTimer; |
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89 int m_scrollSlowAccum; |
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90 |
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91 private Q_SLOTS: |
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92 |
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93 void updateScrolling(); |
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94 |
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95 private: |
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96 |
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97 Q_DISABLE_COPY(ScrollerPrivate) |
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98 Scroller * const q_ptr; |
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99 QPointF mapToScrollArea(const QPoint &point); |
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100 QWidget *m_eventViewport; |
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101 }; |
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102 |
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103 #endif // SCROLLER_P_H |